The party was far from over in a room across the courtyard of the AT&T Executive Education and Conference Center in March, but the namesake of this Darrell K Royal Songwriters Homecoming sat in an otherwise empty amphitheater with his wife, Edith. Everyone at the party wanted to say hi to the iconic Texas football coach, who will be 87 on July 6, so he escaped to save his strength for the music. He sat there, third row center, staring at the stage full of guitars, and smiled. Soon such top flight singer-songwriters as Don Schlitz (“The Gambler”), Mike Reid (“I Can’t Make You Love Me”) and Larry Gatlin (“All the Gold in California”) would be performing the sort of touching songs that have long provided a sanctuary for the coach who is also the fan.